In a medium-sized saucepan, combine tomato paste, water, lemon juice, maple syrup, onion powder, garlic powder, celery salt, clove, cayenne pepper, and salt. Stir until well combined.

Place the saucepan on medium heat and bring the mixture to a boil.

Reduce the heat to low and let the mixture simmer for about 10-15 minutes, stirring occasionally until it thickens and reduces in volume.

Remove the saucepan from the heat and let the mixture cool down to room temperature.

Transfer the ketchup to a jar or container and store it in the refrigerator for up to one week.

Your homemade ketchup with maple syrup is ready to enjoy!